Exodus 27:2
And you shall make the horns of it on the four corners thereof: his horns shall be of the same: and you shall overlay it with brass.
Torrey's Topical Textbook—AKJV

Exodus 39:39
The brazen altar, and his grate of brass, his staves, and all his vessels, the laver and his foot,
Torrey's Topical Textbook—AKJV